I don't think you understand my original posting. Feel free to read it again for clarity, or let me explain it again...
The license that I have owned for several years has now gone missing. It is not viewable via the "my licenses" apex page - it is not listed with the other licenses I own.
However, the license is still active. I have been able to auto update the site and all the extensions are available.
I would like to know how to restore this license on the "my licenses" apex page, so I can then enable the upgrade to pro.